Unit Level Troubleshooting - Epson Stylus COLOR 670 Service Manual

EPSON Stylus COLOR 670
Table 3-3. LED Indicators
LED Indication
Condition
Paper
Power
Check
No Paper -- On
Paper Jam -- Blink
Ink End /
No Cartridge -- --
(black)
Ink End /
No Cartridge -- --
(color)
Ink Low
-- --
(black)
Ink Low
-- --
(color)
Maintenance
Blink Blink
Request
Fatal Error Blink Blink
Troubleshooting
Remedy
Ink End Ink End
(Black) (Color)
-- -- Set paper
Off Off Remove jammed paper
Close the cartridge
cover properly or
On -- replace the ink
cartridge with new
one.
Close the cartridge
cover properly or
-- On replace the ink
cartridge with new
one.
Replace he ink
Blink -- cartridge with new
one.
Replace he ink
-- Blink cartridge with new
one.
Replace the waste ink
pad and reset the
Blink Blink
waste ink counter
stored in EEPROM.
Turn off and back on
the printer. If the
On On
problem still remains,
repair the related units.

Unit Level Troubleshooting

3.2 Unit Level Troubleshooting
You can identify the troubles, using flowcharts in this section and then find
defective unit. When you find out defective unit, refer to "Unit Repair (Printer
Mechanism)" to find defective components and replace them.
Table 3-4. Top-Level Troubleshooting
Symptom
LEDs do not light.
Printer does not operate
Printer mechanism does not
at power on.
operate.
Error is detected Error is indicated by LED indication.
Printing is not performed.
Failure occurs during
Abnormal printing (dot missing, etc.)
printing.
Print quality is poor.
No paper is fed.
Printer does not feed
Paper feed is irregular.
paper correctly.
Paper jam occurs.
Control panel operation
No response to button access.
is abnormal.
Revision A
Problem Flowchart No.
Flowchart 3-1
Flowchart 3-2
Flowchart 3-3
Flowchart 3-4
Flowchart 3-5
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